EP0239463B1 - Elektrische Speisung einer Zentraleinheit in Verbindung mit mindestens einer Empfängerstation durch mindestens ein Steuersignal - Google Patents
Elektrische Speisung einer Zentraleinheit in Verbindung mit mindestens einer Empfängerstation durch mindestens ein Steuersignal Download PDFInfo
- Publication number
- EP0239463B1 EP0239463B1 EP87400540A EP87400540A EP0239463B1 EP 0239463 B1 EP0239463 B1 EP 0239463B1 EP 87400540 A EP87400540 A EP 87400540A EP 87400540 A EP87400540 A EP 87400540A EP 0239463 B1 EP0239463 B1 EP 0239463B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- central unit
- supply device
- local station
- electrical supply
- switching element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
- H02J7/0032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits disconnection of loads if battery is not under charge, e.g. in vehicle if engine is not running
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00308—Overvoltage protection
Definitions
- the subject of the present invention is a device for supplying electrical energy to a system, in particular on board a motor vehicle, of the type described in the preamble to the main claim.
- Such a device is known from the prior art FR-A-2 445 769.
- This known device however has the major drawback that certain circuits both of the central unit and of each local station are constantly connected to the battery by the 'intermediate power wires, even when the system is in standby, which causes a significant discharge of the battery during a prolonged stop of the vehicle.
- the object of the present invention is to remedy this drawback of the known device by proposing an electrical supply device with a consumption level which is practically negligible in the standby state of the system.
- the device according to the invention has the characteristics which are set out in the characterizing part of the main claim.
- the central unit and each of the local stations are completely electrically isolated from the energy source in the standby state of the system. It is only the device for detecting a request to commission local stations which is permanently connected to the source and supplied with energy. However, the energy consumption of this device is very low, if not negligible.
- the reference numeral 3 designates various local stations with which are respectively associated an electrical member 30 which may be, for example the electrical control member of the window regulator.
- Each local station 3 is connected, by means of a power bus 4 to a power source such as a battery, designated at 5, by means of a sectioning and protection member 2 which will be described later. more in detail.
- a central unit 1 is also connected to the sectioning and protection member by a connection 1A.
- each relay contact 6 In parallel with each relay contact 6 is mounted a first resistor RC, or a group of resistors in series, this arrangement partly constituting the sectioning and protection member 2 mentioned above.
- the outputs of the sectioning and protection member 2 are connected to a means for detecting the potential level 9.
- the output of the detection means 9 is connected to an input of the disconnection and protection member 2 and also to a relay, not shown in the figure, associated with the contact 10. This contact is mounted between the power source 5 and the central unit 1.
- the unit control unit 1 is connected to said first relay contact 10.
- Each local station 3 is provided with a switching element 8.
- each local station comprises a power stage 3A connected between the negative pole of the power source 5 and an output of the 'sectioning and protection member 2, and a processing unit 3B connected in parallel to the terminals of the power stage 3A.
- a second resistor RL is mounted between the first resistor RC and the switching element 8. The association of the first resistor RC and this second resistor RL constitutes a divider point voltage divider circuit M.
- the means for detecting the potential level 9 which can be a comparator, for example an operational amplifier 9A or any other equivalent system.
- connection between the central unit 1 and each local station 3 or more precisely each processing unit 3B of each local station is carried out by means of a multiplexed data bus 7A, 7B.
- the central unit 1 is also connected to an input of the sectioning and protection member 2 by a link 1 A.
- FIG. 4 is substantially equivalent to FIG. 3. Only the connections in the sectioning and protection member 2 differ with the central unit 1 and with the potential detection means 9. In fact, in accordance with FIG. 4, there is a double connection 1A, 1 B between outputs of the central unit and inputs of the sectioning and protection member 2. On the other hand, the connection connecting the output of the detection means 9 and an input of the organ 2 mentioned above no longer exists.
- the first relay contact 10 connected between the battery 5 and the central unit 1 can also be located in the sectioning and protection member 2.
- the means for detecting the potential level 9 can be located either within the central unit 1 or the sectioning and protection member 2.
- the switching element 8 closes, thereby establishing the link to the associated local station. with the power source 5.
- the level of the potential at point M drops.
- the potential level detector connected to the divider point compares the potential level of point M with a reference potential level, generally predetermined as a function of the values of the first and second resistors RC and RL. Once the drop in potential level at point M has been detected, the comparator then sends a logic control signal to command the closing of the relay contacts 6 and the closing of the relay contact 10 associated with the central unit.
- the contacts short-circuit the first RC resistors and establish the power distribution in each of the local stations and the central unit, putting the device consequently in working order: the on-board electronic system of the automobile was wake up.
- the central unit has the function of managing all of the local stations and communicates with each of the stations by means of a multiplexed data bus. Each local station is then able to recognize the information it needs by means of its own addressing.
- FIG. 4 represents a device which functions substantially in the same way as the device represented in FIG. 3: the difference lies in the fact that the command to close the second relay contacts 6 is done by the unit central unit 1 instead of being done directly by the potential detector means.
- the device according to FIG. 4 operates as follows: when the user requests a function, the switch 8 closes, the means 9 for detecting the potential level detects the drop in potential at point M and consequently, sends a command to close the first contact of the central unit supply relay 10. Then, the central unit issues a command to close the second relay contacts 6.
- the circuits are de-energized as follows: when the vehicle returns to the rest state, the central unit 1, after a predetermined time delay, transmits a control command signal the opening of the second relay contacts. Once these contacts are open, the central unit 1 sends a command signal to open the first relay contact 10, so as to cut off its own power supply. The entire device, except the means for detecting the potential level 5, is then de-energized or in a state of rest.
- the voltage divider circuit comprises a first and second resistors respectively RC and RL, the ratio of the value of the first resistance to the second resistance is high and preferably about 100.
- the comparator voltage Vcc can be supplied by means of a Zener diode. This voltage could also be the battery voltage (with protection against overvoltage), the electronic detection device not requiring a fixed and regulated voltage.
- An electrical power supply device allows restarting of the entire electronic system of the vehicle only by monitoring the potential level at the dividing point M of each power bus. It also allows the selective connection and disconnection of the various organs of the system.
- this electrical supply device suitable for any multiplexing system in a vehicle can also be applied to a non-multiplexed electrical installation.
- the device solves the problem of limiting the consumption of electronics on board a vehicle when the latter is in the rest state while allowing the immediate operation of each of the functions as soon as the one of them.
Claims (14)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8604192 | 1986-03-24 | ||
FR8604192A FR2596216B1 (fr) | 1986-03-24 | 1986-03-24 | Dispositif d'alimentation electrique d'une unite centrale par au moins un signal de commande, laquelle unite est reliee a au moins une station locale receptrice |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0239463A1 EP0239463A1 (de) | 1987-09-30 |
EP0239463B1 true EP0239463B1 (de) | 1990-08-16 |
Family
ID=9333468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87400540A Expired - Lifetime EP0239463B1 (de) | 1986-03-24 | 1987-03-11 | Elektrische Speisung einer Zentraleinheit in Verbindung mit mindestens einer Empfängerstation durch mindestens ein Steuersignal |
Country Status (4)
Country | Link |
---|---|
US (1) | US4948986A (de) |
EP (1) | EP0239463B1 (de) |
DE (1) | DE3764286D1 (de) |
FR (1) | FR2596216B1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2657733B1 (fr) * | 1990-01-29 | 1992-05-15 | Peugeot | Dispositif de commande de l'alimentation electrique de plusieurs appareils electriques a partir d'une source de courant continu. |
DE4019059A1 (de) * | 1990-06-15 | 1991-12-19 | Bosch Gmbh Robert | Vorrichtung zum ein- und ausschalten einer last |
FR2685565B1 (fr) * | 1991-12-18 | 1994-05-13 | Peugeot Automobiles | Boitier de servitude electrique notamment pour vehicule automobile. |
IT1260676B (it) * | 1993-07-29 | 1996-04-22 | Fiat Auto Spa | Dispositivo elettronico di protezione contro l'eccessiva scarica dellabatteria di un autoveicolo in stazionamento. |
JP3683350B2 (ja) * | 1996-07-24 | 2005-08-17 | 株式会社ソキア | 電子レベル用標尺及び電子レベル |
US8204611B2 (en) * | 2007-02-20 | 2012-06-19 | Caterpillar Inc. | Method for reducing quiescent power draw and machine using same |
CN102642472B (zh) * | 2011-02-17 | 2014-06-25 | 上海航鼎电子科技发展有限公司 | 车载定位追踪设备的电源管理与防死机控制方法及装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2445769A1 (fr) * | 1979-01-04 | 1980-08-01 | Renault | Dispositif de distribution d'energie electrique a bord d'un vehicule, par exemple a moteur |
DE3212324C2 (de) * | 1982-04-02 | 1984-01-26 | Audi Nsu Auto Union Ag, 7107 Neckarsulm | Schaltungsanordnung für den Antrieb eines verschiebbaren Bauteils in einem Kraftfahrzeug, insbesondere eines Kraftfahrzeugfensters |
JPS59117395A (ja) * | 1982-12-24 | 1984-07-06 | Hitachi Ltd | 端末処理装置 |
JPS6028434U (ja) * | 1983-07-29 | 1985-02-26 | 株式会社東海理化電機製作所 | 車両用電源回路 |
-
1986
- 1986-03-24 FR FR8604192A patent/FR2596216B1/fr not_active Expired
-
1987
- 1987-03-11 EP EP87400540A patent/EP0239463B1/de not_active Expired - Lifetime
- 1987-03-11 DE DE8787400540T patent/DE3764286D1/de not_active Expired - Lifetime
-
1989
- 1989-01-12 US US07/296,812 patent/US4948986A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE3764286D1 (de) | 1990-09-20 |
FR2596216A1 (fr) | 1987-09-25 |
EP0239463A1 (de) | 1987-09-30 |
FR2596216B1 (fr) | 1988-07-01 |
US4948986A (en) | 1990-08-14 |
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